The choice of a gas boiler taking into account all its characteristics

Heating gas boilers in our market are represented by models of foreign and domestic manufacturers. They differ significantly in price and quality, but the choice of a gas boiler should start not with the brand, but with the study of its technical characteristics and comparing them with its requirements and capabilities.

The first thing you need to pay attention to is the boiler's power and its efficiency. From the correct choice of the model will depend not only the temperature in your home, but also the amount of gas consumed, and hence the value of utility payments. The simplest calculation of power is as follows: per 1 sq. Km. M of the area requires 10 kW of boiler power. But the choice of a gas heating boiler using only this formula will be incorrect, if you do not take into account the existing ceiling height in the building, the degree of insulation of walls, floors and roof, the number and quality of windows. It is also necessary to take into account the pressure in the gas pipeline, which often falls. In order not to be mistaken, the power obtained by simple calculation must be increased by 30 percent.

The efficiency of the boiler with the simplest explanation means how much gas it will spend in order to provide the desired power. This depends on the design features of the boiler. The first of these is the type of gas burner. They can be natural (atmospheric) and forced (ventilating). The efficiency of the second is 20% higher. Condensing boilers will increase the efficiency by 25. Even if the choice of a gas boiler is stopped on such a system, it is necessary to provide in advance where to put the condensate, which is allocated about 3-5 liters per hour. Just pour on the beds or in the toilet it can not, because it will contain chemicals that destroy the microflora. In the West, the condensate is neutralized. At us with it it is not so.

The second design feature is a two-stage, simulated or single-stage operation mode. Two-stage and simulated allow you to adjust the power depending on the outside temperature, that is, they are more economical.

In addition to power, the choice of a gas boiler depends on the projection capabilities of your home. There are boilers floor and wall. The floors are available with cast iron or steel heat exchangers. With cast iron are more durable, but also more fragile. With steel are more tolerant to mechanical influences, for example, to accidental shocks. In general, the floor boiler is much more powerful than the wall pot, but it is much more massive. In addition, it is more noisy at work. Install it only in a specially equipped room, while the wall can be installed in the corridor or in the kitchen. The advantage of the wall is not only in the more modest dimensions and in the relatively more tolerable norms of the installation, but also in the configuration. They have a burner, a heat exchanger, a pump, a tank, and a thermostat, in short, all the elements that provide the work in one housing. When buying an outdoor one will need to purchase the missing equipment. But floor boilers last longer and rarely require repair.

When installing any boiler, it is necessary to ensure ventilation of the room (window opening or opening window) and discharge of combustion products to the outside. Both wall and floor boilers are produced with natural draft, and also with forced. With a natural cheaper. But if the choice of a gas boiler fell on such a model, you have to spend money on building a classical chimney. But they are completely autonomous, that is, they do not depend on anything other than gas supply. It should be said that boilers with natural draft are produced chimney and parapet, that is, with open and closed combustion chambers.

If the draft of the boiler is forced, a chimney is not required, there is enough coaxial hole in the wall. The draft is provided by a fan built into the boiler. Minus this unit in its energy dependence. That is, as soon as the light is turned off and the fan stops spinning, the boiler is cut down. Therefore, when buying it, you need to buy a voltage regulator and a generator in case of a blackout.

In addition to the above basic characteristics, the choice of a gas boiler for a home must take into account characteristics such as the type of ignition (piezo or electric) and the number of circuits (one or two). Single-circuit boilers work only for heating the room, the two-circuit, in addition to heating, is provided with hot water by the principle of a gas column. To install them you need a source of running water. When the user consumes water, the heating process is suspended.

Well, finally, the manufacturers. With a few exceptions, each of them produces boilers and floor, and wall. The German firms VAILLANT (working either on gas or diesel), WOLF (can work on two types of fuel), BUDERUS (equipped with the newest environmentally friendly burner), VIESSMANN (have better automation) and Finnish THERMIA OY (work at different Types of fuel, are very reliable). These boilers are quite expensive. Much cheaper than the Slovak MODRATHERM RCM, MODRATHERM VULKAN, PROTHERM, Italian BONGIOANNI, BERETTA, FERROLI, ARISTON, Czech DAKON, MORA. Approximately in the same price category are Korean and Japanese boilers. Domestic models are the cheapest.